Open AccessApple, Mite Control with Carzol/Plictran/Basic H, 1986
Author(s) -
Larry A. Hull
Publication year - 1987
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/12.1.40
Subject(s) - sprayer , horticulture , randomized block design , acre , acaricide , mite , biology , toxicology , mathematics , botany , agronomy
The experimental design was a randomized complete block, with 5 acaricide treatments and a control replicated 4 times. Plots consisted of 4 trees, one each of cultivars York Imperial, Delicious, Golden Delicious, and Rome Beauty. Experimental sprays were applied with a Myers Mity Mist airblast sprayer calibrated to deliver 50 gal/acre. All sprays were applied to both sides of trees. Application date was 10 Jul. Dithane M-45 was the only fungicide applied during the course of the experiment. ERM populations were evaluated by collecting a random sample of 25 leaves/tree (cv Delicious), 100 leaves/treatment and brushing them with a Henderson-McBurnie mite brushing machine. The predator S. punctum was observed by making 3 min counts of adults and larvae around periphery of the same trees.
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